diff --git a/pyproject.toml b/pyproject.toml
index 658a1b5b66..ac1b759670 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -76,6 +76,7 @@ lint.extend-select = [
   "PLE",
   "PLW",
   "RSE",
+  "RUF012",
   "RUF100",
   "W",
 ]
diff --git a/src/pipx/animate.py b/src/pipx/animate.py
index 327911dbb6..ed1dcd6f30 100644
--- a/src/pipx/animate.py
+++ b/src/pipx/animate.py
@@ -21,7 +21,7 @@
     import ctypes
 
     class _CursorInfo(ctypes.Structure):
-        _fields_ = [("size", ctypes.c_int), ("visible", ctypes.c_byte)]
+        _fields_ = (("size", ctypes.c_int), ("visible", ctypes.c_byte))
 
 
 def _env_supports_animation() -> bool:
diff --git a/src/pipx/pipx_metadata_file.py b/src/pipx/pipx_metadata_file.py
index 7d04062af5..0c3796784c 100644
--- a/src/pipx/pipx_metadata_file.py
+++ b/src/pipx/pipx_metadata_file.py
@@ -1,7 +1,8 @@
 import json
 import logging
+from dataclasses import asdict, dataclass, field
 from pathlib import Path
-from typing import Any, Dict, List, NamedTuple, Optional, Union
+from typing import Any, Dict, List, Optional, Union
 
 from pipx.emojis import hazard
 from pipx.util import PipxError, pipx_wrap
@@ -26,7 +27,8 @@ def _json_decoder_object_hook(json_dict: Dict[str, Any]) -> Union[Dict[str, Any]
     return json_dict
 
 
-class PackageInfo(NamedTuple):
+@dataclass(frozen=True)
+class PackageInfo:
     package: Optional[str]
     package_or_url: Optional[str]
     pip_args: List[str]
@@ -37,10 +39,10 @@ class PackageInfo(NamedTuple):
     apps_of_dependencies: List[str]
     app_paths_of_dependencies: Dict[str, List[Path]]
     package_version: str
-    man_pages: List[str] = []
-    man_paths: List[Path] = []
-    man_pages_of_dependencies: List[str] = []
-    man_paths_of_dependencies: Dict[str, List[Path]] = {}
+    man_pages: List[str] = field(default_factory=list)
+    man_paths: List[Path] = field(default_factory=list)
+    man_pages_of_dependencies: List[str] = field(default_factory=list)
+    man_paths_of_dependencies: Dict[str, List[Path]] = field(default_factory=dict)
     suffix: str = ""
 
 
@@ -85,11 +87,11 @@ def __init__(self, venv_dir: Path, read: bool = True):
 
     def to_dict(self) -> Dict[str, Any]:
         return {
-            "main_package": self.main_package._asdict(),
+            "main_package": asdict(self.main_package),
             "python_version": self.python_version,
             "source_interpreter": self.source_interpreter,
             "venv_args": self.venv_args,
-            "injected_packages": {name: data._asdict() for (name, data) in self.injected_packages.items()},
+            "injected_packages": {name: asdict(data) for (name, data) in self.injected_packages.items()},
             "pipx_metadata_version": self.__METADATA_VERSION__,
         }
 
diff --git a/tests/helpers.py b/tests/helpers.py
index c2d2cb875f..888f9d4559 100644
--- a/tests/helpers.py
+++ b/tests/helpers.py
@@ -2,6 +2,7 @@
 import os
 import re
 import sys
+from dataclasses import replace
 from pathlib import Path
 from typing import Any, Dict, List, Optional
 from unittest import mock
@@ -195,13 +196,15 @@ def assert_package_metadata(test_metadata, ref_metadata):
     assert isinstance(test_metadata.apps, list)
     assert isinstance(test_metadata.app_paths, list)
 
-    test_metadata_replaced = test_metadata._replace(
+    test_metadata_replaced = replace(
+        test_metadata,
         apps=sorted(test_metadata.apps),
         app_paths=sorted(test_metadata.app_paths),
         apps_of_dependencies=sorted(test_metadata.apps_of_dependencies),
         app_paths_of_dependencies={key: sorted(value) for key, value in test_metadata.app_paths_of_dependencies.items()},
     )
-    ref_metadata_replaced = ref_metadata._replace(
+    ref_metadata_replaced = replace(
+        ref_metadata,
         apps=sorted(ref_metadata.apps),
         app_paths=sorted(ref_metadata.app_paths),
         apps_of_dependencies=sorted(ref_metadata.apps_of_dependencies),
diff --git a/tests/test_pipx_metadata_file.py b/tests/test_pipx_metadata_file.py
index 9e1cc78412..83f7579154 100644
--- a/tests/test_pipx_metadata_file.py
+++ b/tests/test_pipx_metadata_file.py
@@ -1,4 +1,5 @@
 import sys
+from dataclasses import replace
 from pathlib import Path
 
 import pytest  # type: ignore
@@ -68,9 +69,9 @@ def test_pipx_metadata_file_create(tmp_path):
 @pytest.mark.parametrize(
     "test_package",
     [
-        TEST_PACKAGE1._replace(include_apps=False),
-        TEST_PACKAGE1._replace(package=None),
-        TEST_PACKAGE1._replace(package_or_url=None),
+        replace(TEST_PACKAGE1, include_apps=False),
+        replace(TEST_PACKAGE1, package=None),
+        replace(TEST_PACKAGE1, package_or_url=None),
     ],
 )
 def test_pipx_metadata_file_validation(tmp_path, test_package):